Examine source code of Copy Element Text

{
  "manifest_version": 3,
  "name": "Copy Element Text",
  "version": "1.0",
  "description": "Copy the text of the right clicked element.",
  "permissions": [
    "contextMenus",
    "clipboardWrite",
    "activeTab",
    "scripting"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "all_frames": true,
      "run_at": "document_start"
    }
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "copyelementtext10@raul1ro",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "icons": {
    "96": "icons/icon96.png"
  }
}